作者:Kentaro Asahi、Hiroshi Nishino
DOI:10.1016/j.tet.2007.12.017
日期:2008.2
The manganese(III)-induced oxidative cyclization of 3-(2-oxoethyl)piperidine-2,4-diones was conducted in the presence of 1,1-diarylethenes at reflux temperature to produce 3-aza-7,12-dioxatricyclo[4.3.3.01,6]dodec-8-en-2-ones, simply called azadioxa[4.3.3]propellanes, in excellent yields. A similar oxidation of 2-(2-oxoethyl)cycloalkane-1,3-diones gave the corresponding [4.3.3]-, [5.3.3]-, and [6.3.3]-propellanes
在回流温度下,在1,1-二芳烃的存在下,进行了锰(Ⅲ)诱导的3-(2-氧乙基)哌啶-2,4-二酮的氧化环化反应,生成了3-氮杂-7,12-二氧杂三环[ 4.3.3.0 1,6 ] dodec -8-en-2-ones,简称为azadioxa [4.3.3] propellanes,收率很好。2-(2-氧乙基)环烷-1,3-二酮的类似氧化反应得到相应的[4.3.3]-,[5.3.3]-和[6.3.3]-丙炔。3-氧丙基取代的环烷-1,3-二酮的氧化还提供了相应的丙炔以及3-氧丙基取代的双环中间体。在路易斯酸的存在下,双环中间体肯定被转化为相应的螺旋桨。还描述了结构确定和反应途径。